Glossary
annealing The process of reducing the stresses in a material by the application of heat in a controlled manner. It involves glass or metal being heated and/or cooled slowly in a lehr (an oven or kiln), thus bringing about a relaxing of the internal stresses in the material.
axisymmetric A three-dimensional form that is symmetric around a single axis; a typical example might be a cone.
bar A term used in industry to describe pressure in a vessel. 1 bar is equal to 14.504 pounds per square inch (psi), 0.98692 atmospheric pressure or 100,000 pascals (Pa).
billet In engineering terms a billet is a solid lump of steel from which are made rods, bars, and sections.
biscuit/bisque Refers to a ceramic that has been fired but not glazed. The firing ...
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